// Copyright (c) 2021, Fr.Terrot. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file. 

package io.gitea.mylyn.core;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;

import org.eclipse.mylyn.tasks.core.IRepositoryQuery;

import io.gitea.model.IssueState;
import io.gitea.model.Issue;
import io.gitea.model.Label;

public class GiteaIssueSearch {

    private String assignee;
    private String milestone;

    private Boolean opened;
    private Boolean closed;

    private List<Pattern> labels = new ArrayList<Pattern>();

    public GiteaIssueSearch(IRepositoryQuery query) {
        assignee = query.getAttribute("assignee");
        milestone = query.getAttribute("milestone");

        opened = Boolean.parseBoolean(query.getAttribute("opened"));
        closed = Boolean.parseBoolean(query.getAttribute("closed"));

        for (String label : query.getAttribute("labels").split(",")) {
            if (label.trim().length() > 0) {
                labels.add(Pattern.compile(label.trim()));
            }
        }
    }

    public boolean doesMatch(Issue issue) {
        if (!assignee.equals("") && (issue.getAssignee() == null || !(assignee.equals(issue.getAssignee().getLogin())
                || assignee.equals(issue.getAssignee().getFullName())))) {
            return false;
        }

        if (!milestone.equals("")
                && (issue.getMilestone() == null || !milestone.equals(issue.getMilestone().getTitle()))) {
            return false;
        }

        List<Pattern> matchedLabels = new ArrayList<Pattern>();
        for (Pattern p : labels) {
            for (Label label : issue.getLabels()) {
                if (p.matcher(label.getName()).find()) {
                    matchedLabels.add(p);
                }
            }
        }

        if (matchedLabels.size() < labels.size()) {
            return false;
        }

        if (!closed && IssueState.isClosed(issue)) {
            return false;
        }

        if (!opened && IssueState.isOpen(issue)) {
            return false;
        }

        return true;
    }

}